CN107913838B

CN107913838B - Method and device for patterning the surface of a component

Info

Publication number: CN107913838B
Application number: CN201710915697.9A
Authority: CN
Inventors: 麦克·德菲利皮; 西里尔·梅达尔德; 菲利浦·普罗韦耐兹; 塞巴斯蒂安·萨尔泽
Original assignee: Exel Industries SA
Current assignee: Exel Industries SA
Priority date: 2016-10-06
Filing date: 2017-09-30
Publication date: 2022-11-08
Anticipated expiration: 2037-09-30
Also published as: JP7010645B2; US11253888B2; CN107913838A; US20180099309A1; EP3305415A1; ES2872623T3; KR20180038390A; EP3305415B1; JP2018058064A; KR102452463B1

Abstract

The invention relates to a method and a device for patterning the surface of a component, the method for patterning the surface (S62) of a component (6) comprising at least the following steps, consisting in: coating at least a portion of the surface with a first coating product, automatically coating at least a portion of the mask (12) on a portion of the surface (Z62), coating the surface with a second coating product, and removing the mask (12). Preferably, the mask (12) is automatically applied at least partially in the form of at least one layer (122, 124, 126) of non-atomized fluid obtained by moving (A1) the applicator (16) emitting the non-atomized fluid along a portion (Z62) of the surface (S62) to which the mask (12) is to be applied.

Description

Method and device for patterning the surface of a component

Technical Field

The present invention relates to a method and apparatus for coating a surface of a component with a predetermined pattern.

The present invention is in the technical field of painting, and more particularly in the technical field of customization and personalization of the painted surface of objects being manufactured, such as automotive, aircraft fuselages and household appliances.

Background

Nowadays, automobile manufacturers tend to propose vehicles which are more and more adapted to the customer's wishes, in particular for example two-tone vehicles with a roof which is painted in a different colour than the side of the vehicle. The trend is also to provide vehicles that are painted with different effects, such as a sparkle effect, a matte effect or a texture effect. In the automotive industry, other decorative elements have also been proposed, such as stripes on the hood of a vehicle.

It is also known to customize the fuselage of a commercial aircraft using a pattern, such as the logo of an airline or such as maintenance or safety instructions.

The trend of customizing manufactured products is also noted in the field of household appliances.

The most common process for achieving a two-tone vehicle begins with painting the vehicle body with a primer having a dominant color, possibly with application of a clear coat and drying of the vehicle body. After this, the covering is manually applied to the surface of the vehicle body on which the main color should remain, and the remaining surface not covered by the covering is painted another color by means of a conventional paint applicator such as an air sprayer, an air-mix or airless spray gun, or a rotary atomizer. At the end of the process, the mask is removed. Such masking and unmasking operations are carried out manually and require a large amount of skilled manpower, since the border between two coatings having different colors must be well defined and well positioned. No imperfections such as wavy lines should be discernible to the human eye and the second coating should not migrate under the veil.

US-se:Sup>A-2016/0001322 discloses se:Sup>A coating process in which se:Sup>A pattern is applied to se:Sup>A primer layer without an intermediate varnish layer. This method still requires the definition of the area where the pattern to be realised by means of a mask, which is fixed on the object to be coated by known techniques. This causes the inconveniences listed above, especially in terms of the large amount of skilled manpower required.

US-se:Sup>A-5 175 018, on the other hand, teaches how to prevent the coating procedure from overspraying without the application of masking tape and masking paper by using an air curtain mask ejected by air jet nozzles. The air flows continuously over the area to be protected from the coating while being coated. This method does not guarantee that the protruding areas are not contaminated by the coating.

Disclosure of Invention

The object of the present invention is to solve these problems with a new method for patterning the surface of a component, on which a mask can be automatically applied by a robot, which method makes it possible to save time, improve reproducibility and reduce labor costs.

To this end, the invention relates to a method for patterning a surface of a component, comprising at least the following successive steps consisting in:

a) Applying a first coating article on at least a portion of the surface,

b) Automatically applying at least a portion of the covering to a portion of the surface,

c) Applying a second coating article over at least a portion of the surface free of the obscuration,

d) The mask is removed.

Due to the automatic application of the covering, there is no need for an operator to work manually around the object to be painted, such as an automobile body in a paint shop, which reduces the need for high-quality manpower and the risk of human error.

According to advantageous but not mandatory further aspects of the invention, the coating method may comprise one or several of the following features, employed in any adoptable combination.

In particular, during step b), the mask may be applied at least partially in the form of at least one layer of non-atomized fluid, said layer being obtained by moving an applicator that emits the non-atomized fluid along that part of the surface on which the mask is to be applied. Due to this aspect of the invention, a mask may be generated to cover a portion of the surface by moving the applicator relative to the surface, the mask coated on the portion of the surface together with the adjacent layer constituting the mask. Alternatively, one or more layers may constitute an end portion of the screen, the other portion of the screen being constituted by a rigid or flexible material part which is manually mounted on the surface to be coated without special care, since the accuracy of the demarcation of the screen is obtained by the automatically applied layers.

The invention also relates to a device enabling the implementation of the method described above, and more particularly to a device for coating a surface of a part with a pattern, the device comprising at least one first applicator for applying a first coating product on the surface and at least one second applicator for applying a second coating product on the surface. According to the invention, the apparatus further comprises an automatic applicator for automatically applying at least a part of the veil on the surface.

Drawings

The invention will be better understood on the basis of the following description, given in correspondence with the attached drawings and as an illustrative example without restricting the object of the invention. In the drawings:

figure 1 is a schematic top view of an apparatus according to the invention for implementing the method according to the invention;

figure 2 is a partial perspective view of the apparatus of figure 1;

fig. 3 is a block diagram of a first method according to the invention implemented on the device in fig. 1 and 2;

fig. 4 is a top view of the hood of the vehicle shown in fig. 2, which has been completely coated with a covering;

fig. 5 is a top view similar to fig. 4 of an engine head for a method according to a second embodiment of the invention;

figure 6 is a perspective view similar to figure 2 for a method according to a third embodiment of the invention;

fig. 7 is a top view of the bonnet of the car before the covering is applied on the bonnet during the method according to the fourth embodiment of the invention;

FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 7;

FIG. 9 is a top view similar to FIG. 7 when the mask has been applied;

figure 10 is a cross-sectional view along the line X-X in figure 9;

figure 11 is a top view similar to figures 7 and 9 when the shutter is removed;

FIG. 12 is a cross-sectional view taken along line XII-XII in FIG. 11;

figure 13 is a block diagram of a method according to a fifth embodiment of the invention;

figure 14 is a block diagram of a method according to a sixth embodiment of the invention; and

fig. 15 is a block diagram of a method according to a seventh embodiment of the invention.

Detailed Description

The apparatus 2 shown in fig. 1 and 2 is used to implement a method for applying a paint layer including a pattern to the entire surface of a vehicle body. More precisely, the entire vehicle body should be covered with paint having two colours, a first colour on a first part of the surface of the vehicle body and a second colour on a second part of the surface.

In the example of the figures, the method is carried out to paint a vehicle having a central area on its bonnet, where the vehicle is of a different colour to the rest of the bonnet.

According to an alternative embodiment of the invention, not shown, the repartitioning of the two colors of the pattern may be different.

Furthermore, the pattern can be obtained by using a single primer and different varnishes having different effects, such as a sparkle effect, a matte effect or a texture effect. Sometimes varnishes are also called lacquers.

The apparatus 2 comprises a conveyor belt 4 which moves the vehicle body 6 in a conveying direction.

In a first station (booth) 22 of the apparatus 2, a number of multi-axis robots 82a are used to spray a first primer having a first color on the vehicle bodies 6. The multi-axis robot 82a is equipped with a pneumatic sprayer or a rotary sprayer, preferably an electrostatic sprayer. These sprayers may be of the air-spray type, air-mix type, or airless type.

In the second station of the stations 22, several multi-axis robots 82b are used to spray varnish on the car bodies 6. The multi-axis robot 82b is equipped with a sprayer, which may be of the same type as the sprayer of the multi-axis robot 82 a.

The application of the first primer is performed during the first step 1002 of the method of the present invention. In a second step 1006 of the method, a varnish coating is performed.

After

steps

1002 and 1006, each vehicle body is conveyed by conveyor 4 into oven 24 where heater 10 is used to heat or dry the vehicle body. This occurs in a third step 1010 of the method of the present invention.

After drying, each car body is conveyed by the conveyor belt 4 towards a second station 26, which comprises three successive stations.

In a further step 1014, in a first station, a covering 12 is applied to the hood 62 of each vehicle body 6. This first station is partially shown in fig. 4, and the screen 12 is constituted by three

belts

122, 124, and 126 arranged adjacent to each other in a central region Z62 of the upper surface S62 of the engine cover 62. This makes it possible to coat the remaining portion of the engine cover 62 with a second primer having a color different from that of the first primer while maintaining the color of the first primer in the central region Z62 of the engine cover 62 covered by the shade 12.

Each band is automatically coated in the form of se:Sup>A layer of non-atomized fluid by se:Sup>A multi-axis robot 14 equipped with se:Sup>A coater 16 of the same type as the one described in US-se:Sup>A-2015/0367620, the content of which is incorporated by reference in the present description.

The applicator 16 is an extrusion die which is supplied with water and the material used to create the veil 12 via pipes not shown. The mixture of water and material is discharged out of the applicator 16 by pressure in the form of an emulsion.

In fact, in this example, the material applied is a copolymer emulsion. This is the case when the emulsion is delivered by the product manufacturer. Emulsions are not made in situ. Alternatively, the emulsion may be made in situ.

The equipment used to pressurize the emulsion is a gas cylinder that is charged between coating stages. During coating, the piston of the cylinder is pushed by pressurized air or by an electric motor. The material applied by the applicator 16 may also be discharged in the form of a slurry, liquid or gel. In contrast to the primer and varnish applied in

steps

1002 and 1006, the discharged material is not atomized.

The applicator 16 enables application of each

band

122, 124 or 126 in the form of a layer of non-atomized fluid. In particular, the fluid may be an aqueous solution of polyvinyl acetate (PVA) or an emulsion of acrylic copolymer. Advantageously, the ratio of polymer to water in the applied fluid is about 50/50. However, this ratio may vary depending on the application.

In fig. 2, the covering 12 is being applied. Band 122 has been coated, band 124 has been partially coated and band 126 has not been coated on zone Z62.

The

bands

122, 124 and 126 are adjacent to each other with a slight overlap 128 between two adjacent bands, which avoids any risk of contaminating the zone Z62 of the bonnet 62 covered by the shroud 12. Depending on the shape of the area to be covered, the overlap may be more or less important. It is advantageous to obtain at least one sharp edge from both side edges of the strip.

The flow rate of fluid to the applicator 16 is selected to create a band having a uniform or similarly uniform thickness in the 200 μm range and having a width of about 95 mm. In fact, the coated strip is generally "rectangular" in cross-section and has very little difference in thickness between the edges and the middle portion of the strip. Typically, the edges are thicker than the middle portion as the material is extruded, which corresponds to a so-called "cusp effect". The moulds used in the present invention of US-se:Sup>A-2015/0367620 avoid this problem.

The coating distance, i.e. the distance between the outlet of the applicator 16 and the zone Z62 of the upper surface S62, corresponding to the distance at which the material coming out of the applicator 16 has a substantially constant width, is chosen to be between 3mm and 10mm, preferably approximately equal to 6 mm. The coating distance is measured perpendicular to the upper surface S62. Due to the 3D shape of the engine cover 62, it is impossible to completely fix the distance between each point of the die slot and the upper surface S62. However, it is important to have the non-overlapping edges at the correct distance of the mould, as the non-overlapping edges will define the quality of the boundary between the 2 coatings.

The speed of movement of the applicator 16 in its direction of movement, shown by arrow A1 in fig. 2, generally parallel to the upper surface S62 is adapted to the speed of extrusion of the ribbon from the applicator 16 to obtain a uniform thickness and to avoid wavy edges on the mask 12. In practice, the speed of movement of the applicator in the direction of the arrow A1 is similar to the extrusion speed of the strip, i.e. equal to this extrusion speed plus or minus 5%.

Since the screen 12 is applied in the form of a strip of non-atomized fluid, the screen 12 can be automatically applied using a robot such as a multi-axis robot 14. This enables a fast, reproducible and accurate coating of the mask 12. Furthermore, due to the structure of the

bands

122, 124 and 126, there is no risk of paint, which is later applied to the engine cover 62, migrating under the screen 12.

In practice, the mask 12 may be referred to as a liquid-coated mask, or "LAM," because the belt is coated in liquid or liquid-like form in step 1014.

Once the covering 12 is coated in step 1014, the conveyor belt 4 moves each vehicle body toward the second and third stations of the station 26 where the second primer is applied to the surface S62 and the varnish is applied using the multi-axis robot 86b in the same manner as in the station 22, as explained above. This occurs in two subsequent steps of the method of the invention, namely a step 1018 of applying a second primer having a second color and a step 1022 of applying a varnish, which may be the same as or different from the varnish used in step 1006. The multi-axis robot 86a and the multi-axis robot 86b are also equipped with sprayers, which may be the same as the sprayers of the multi-axis robot 82a and/or the multi-axis robot 82 b.

After that, the conveyor belt 4 conveys each vehicle body toward the second oven 28 provided with the heater 11 that enables heating or drying of the LAM 12, the second base coat and the clear coat. This takes place in a further step 1026 of the method.

After that, in a further step 1030, the shutter 12 is removed from the bonnet 62, as indicated by arrow A2 in fig. 1. This takes place in a station 29 of the plant 2 located downstream of the oven 28 along the conveyor belt 4.

To facilitate step 1030, i.e., to remove the covering 12 in its entirety, the covering 12 should not be too elastic at this stage. This is why drying should be performed at a temperature between 100 ℃ and 160 ℃, preferably between 120 ℃ and 140 ℃ during step 1026. In practice, it has been demonstrated that a temperature of 130 ℃ is sufficient to cure the tape so that the tape forms a relatively strong unitary covering 12 that can be easily removed. For the drying of step 1026 to be effective, it should be continued for a time between 10mm and 30 mm. A duration of 20mm has proven sufficient.

The liquid-coated veil material is selected to accommodate standard paint curing processes. When cured with the primer layer and the overlying varnish, the liquid-coated veil material becomes dry and has very limited elasticity without changing the curing parameters used to dry the coating.

To facilitate the removal of the shutter 12 in step 1030, and according to an advantageous but not mandatory aspect of the method, the tab 18 is temporarily fixed on the central zone Z62 of the bonnet 62. The tab 18 may be partially covered using removable glue, using double-sided tape, or using single-sided tape to cover the tab and the surface to be coated to affix the tab to the engine cover 62 prior to coating the LAM 12 as shown in fig. 2.

As shown in fig. 2 and 4, the tab 18 is affixed to the central region Z62 of the engine cover 62 so as to assume the following configuration: an end 182 of the tab 18 protrudes from the upper surface S62 of the engine cover 62, and a portion 184 of the tab 18 is located on the zone Z62. Once all three bands 122 to 126 have been applied to the engine cover 12, the portion 184 is covered by the band 124 in the shroud 12.

This enables shutter 12 to be removed by pinching end 182 and pulling it away from central zone Z62 as shown by arrow A2 in fig. 4. The movement of the tab 18 is transmitted to the shutter 12. Removal of the shade 12 may be performed by an operator or robot pulling on the tab 18.

As shown in fig. 5 for a second method according to the invention, the width W18 of the tab 18 may be substantially equal to the width W12 of the covering 12. In particular, the tab 18 may be designed to have a width large enough to be located under all of the strips of the covering 12, which reduces the risk of tearing the covering at the overlap 128 when the covering 12 is removed by pulling on the tab 18 as shown by arrow A2 in step 1030.

In the first two methods of the present invention, the end 182 of tab 18 may be used by a robot or operator without contacting surface S62.

With the first and second methods mentioned above, when the mask 12 is removed, the edge of the surface S62 where the second color is applied is relatively high because it accumulates the thickness of the second primer applied in step 1018 and the thickness of the varnish applied in step 1022. A shoulder is formed on the bonnet 62 at the transition between the two painted areas, which also depends on the thickness of the screen 12. The transition region is not smooth.

For the alternative method of the invention described hereinafter, the same parts of the apparatus 2 and the same steps of each method bear the same reference numerals. Hereinafter, only the difference with respect to the first method will be explained.

As shown in fig. 6 and according to a third method of the invention, the shelter 12 may be made up of two parts, namely a flexible cover 121, of plastic material or paper, positioned on the front part of the bodywork 6, and a LAM made up of two

belts

122 and 124 applied by the multi-axis robot 14 and the applicator 16 to the two front uprights 64 of the bodywork 6, on either side of the front window. For purposes of clarity in fig. 6, the cover 121 is shown as translucent, which is not mandatory. The cover 121 does not need to be accurately fixed to the vehicle body 6 because it does not participate in defining the boundary between two regions having different colors on the vehicle body 6. A similar method may be used on the rear pillars of the vehicle body 6, which enables the entire upper surface S66 of the roof 66 of the vehicle body to be painted with a different color than the rest of the vehicle body 6 in

steps

1018 and 1022 of the method. Here again, the boundary region between the two colors on the painted automobile can be defined precisely, since the

bands

122 and 124 are applied automatically, precisely and reproducibly by the multi-axis robot 14.

Instead of the flexible cover 121, a rigid member may be used to cover the front portion and/or the rear portion of the vehicle body 6.

According to a fourth method of the invention, illustrated in fig. 7 to 12, the removal of the screen can be improved by using a suction cup 38, which is mounted on the central zone Z62 of the bonnet 62, as illustrated in fig. 7 and 8, before step 1014. When the suction cup is mounted on the engine cover 62, as indicated by arrow A3 in fig. 8, air is removed from the suction cup via the tube 40. This ensures that the suction cup 38 remains in place on the engine cover 62.

After this, the tube 40 is removed and the mask 12 is coated in step 1014 as explained above. As shown in fig. 9 and 10, the cover 12 covers the suction cups 38.

In step 1030, some air is injected into the suction cup 38 via the tube 40 that has been reinstalled, as shown by arrow A4 in fig. 12. This air spreads between the hood 62 and the screen 12, which facilitates removal of the screen 12 by pulling on the screen and possibly on the tube 40 as shown by arrow A2 in fig. 11.

Alternatively, a gas other than air may be injected into the suction cup 38.

Alternatively, air is injected into the suction cup 38 only in step 1030. This enables the suction cup to be separated from the surface S62 by pulling on the tube 40.

In order to avoid a high cliff between two regions of different color on the vehicle body 6, the order of the method steps is modified in a fifth method of the invention shown in fig. 13.

In this fifth embodiment, a first primer having a first color is applied in step 1002. Thereafter, the first primer is dried in step 1010.

After that, the LAM mask 12 is coated in step 1014 and the mask is separately dried in step 1016.

After that, a second primer having a second color is applied in step 1018.

The mask 12 is removed in step 1030 while the second primer is still undried.

After that, a clearcoat is applied in step 1034 and dried with a second basecoat in step 1038.

This method gives good results in terms of transitions between different areas having different colours, since there is only one layer of varnish on the whole surface. The edge between two color regions is difficult to perceive by touch. In this process, the mask 12 must be removed with great care because the second primer is still undried in step 1030. This fifth method requires an additional oven in the apparatus 2 compared to the first method of the present invention, because it comprises three drying steps, i.e. step 1010, step 1016 and step 1038.

According to the sixth method of the present invention shown in fig. 14, another method is possible. The first three

steps

1002, 1010 and 1014 of the method are the same as the first three steps of the fifth method of fig. 13.

In a fourth step 1018, a second primer is applied over the supported (backed) first primer and the green shade 12.

After that, the veil 12 and the second primer are dried in step 1026.

After step 1026,

steps

1030, 1034, and 1038 are performed as in the method of fig. 13.

This sixth method according to the invention also gives good results in terms of transitions, since there is only one layer of varnish on the entire surface. As with the method of fig. 13, this sixth method also requires three furnaces. An advantage of the method of fig. 14 over the method of fig. 13 is that the second primer has been dried prior to removing the mask 12.

In this method, if the second primer is applied to a relatively small portion of the vehicle body 6 (e.g., the roof), step 1026 may be performed by locally heating the vehicle body 6, thus avoiding the use of a complete oven for step 1026.

It is also possible to obtain a pattern on a vehicle by using two varnishes or lacquers with different effects on a single base coat. This corresponds to the seventh method of the present invention shown in fig. 15.

In the method, a primer is applied in step 1002 and a first varnish is applied in a further step 1006.

After that, the primer and first clear coat are dried in step 1010 and the LAM 12 is coated in step 1014. These four steps are identical to the steps of the first method shown in fig. 3.

Following step 1014, a second varnish is applied in step 1022 and dried in step 1026 along with the veil 12.

After that, the shutter 12 is removed in step 1030.

The method of fig. 15 enables a pattern to be obtained if the first and second varnishes have different effects, such as sparkle, matt or texture.

The method of fig. 15 may be modified to be used with two or more primers having different colors.

The invention has been described above with respect to fig. 1 to 14 for the case of using two primers. However, the present invention can be used with three or more primers, provided that the steps of the method are applicable.

Instead of a multi-axis robot 14, any type of robot may be used to coat the LAM 12.

Alternatively,

bands

122, 124, and 126 do not overlap.

The number of

multi-axis robots

82a, 82b, 86a, 86b may be different from 2. Similarly, more than one robot 14 and one applicator 16 may be used depending on the surface area of the LAM 12 to be coated.

According to an embodiment of the invention, not shown, the screen 12 may be constituted by a single band of non-atomized fluid, so as to decorate the surface with stripes of paint having the width of the band.

The device 2 shown in fig. 1 is suitable when one of the second to sixth methods is carried out.

The invention is explained above with respect to examples in the field of automotive painting. However, other applications, such as for painting aircraft fuselages, household equipment, motorcycles, earth moving equipment, agricultural machinery, etc., are also possible.

Further embodiments of the invention may be obtained by combining the features of the embodiments with the variants described above.

Claims

1. A method for patterning a surface (S62; S66) of a component (6), the method comprising at least the following successive steps consisting in:

a) Coating (1002) a first coating article on at least a portion of the surface, wherein the first coating article is a first primer having a first color,

b) Automatically applying (1014) at least a portion (122, 124, 126) of a mask (12) over a portion (Z62) of the surface, at least a portion of the mask being applied over the first coating article, wherein the mask is applied at least partially in the form of at least one band of non-atomized fluid, the at least one band being obtained by moving an applicator that ejects the non-atomized fluid along the portion of the surface to which the mask is applied, the applicator being an extrusion die and the speed of movement of the applicator relative to the portion of the surface being similar to the speed at which the band is extruded from the applicator,

c) Applying (1018) a second coating article as a second primer having a second color on at least a portion of the surface free of obscuration, and

d) -removing (1030) the shutter(s),

e) After step b) and before step d), drying (1026) the cover,

f) Applying (1006) a first varnish over the first primer after step a) and before step b),

g) After step f) and before step b), drying (1010) the first basecoat and the first clearcoat, and

h) After step c) and before step e), applying (1022) a second varnish, having an appearance, once dried, different from that of the first varnish, on the second primer and on the portion of the shade constituted by the at least one band of non-atomized fluid, wherein,

during step e), the second primer and the second clear coat are also dried (1026), and

the steps of the method are carried out in the following order: a) (1002), f) (1006), g) (1010), b) (1014), c) (1018), h) (1022), e) (1026), and d) (1030).

2. Method according to claim 1, wherein the screen (12) as a whole is coated in the form of at least one band (122, 124, 126) of non-atomized fluid.

3. Method according to claim 1, wherein the mask (12) is applied partly in the form of a rigid or flexible material part (121) on a first part (62) of the portion (62, 64) of the surface on which the mask is to be applied and partly in the form of at least one strip (122, 124) of non-atomized fluid on a second part (64) of the portion of the surface.

4. The method according to claim 1 for painting a surface of a part having two colors, wherein,

-said method comprises at least the following steps consisting in:

g') drying (1010) the first primer after step a) and before step b),

h') applying (1034) a varnish on the first primer and the second primer after step d),

i) After step h'), drying (1038) the second basecoat and the clearcoat,

-step a) consists in applying (1002) a first primer having a first colour,

-step c) consists in applying a coating on said surface (S62; s66) the part not covered by the shade (12) is coated (1018) with a second primer having a second color,

-during step e), only the shade (12) is dried (1016), and

-the steps of the method are carried out in the following order: a), g '), b), e), c), d), h') and i).

5. The method according to claim 1 for painting a surface of a part having two colors, wherein,

-said method comprises at least the following steps consisting in:

g ") drying (1010) the first primer after step a) and before step b),

h ") applying (1034) a clear coat on the first and second base coats after step d),

i ") after step h"), drying (1038) the varnish,

-step a) consists in applying (1002) a first primer having a first colour,

-during step e) the second primer is also dried (1026), and

-the steps of the method are carried out in the following order: a), g '), b), c), e), d), h ') and i ').

6. The method according to claim 1 for coating a surface of a component having at least one color, wherein,

-said method comprises at least the following steps consisting in:

f ' ' ') after step a) and before step b), applying (1006) a first varnish on the first primer,

i '' ') after step f' '') and before step b), baking (1010) the first basecoat and the first clearcoat,

-step a) consists in applying (1002) a first primer,

-step h) consists in applying a coating on said surface (S62; s66) of the portion not covered by the screen (12) is coated (1022) with a second varnish which, once dried, has an appearance different from that of the first varnish,

-during step e), the second varnish is also dried (1026), and

-the steps of the method are carried out in the following order: a) F '' '), i' ''), b), h), e) and d).

7. The method according to claim 1 for coating a surface of a component with at least one color, wherein,

-said method comprises at least the following steps consisting in:

k) After step c) and before step e), applying a second varnish, having an appearance once dried different from that of said first varnish, on a second primer,

-step a) consists in applying (1002) a first primer,

-step c) consists in applying a coating on said surface (S62; s66) coating (1022) a second primer on the part not covered by the shelter (12),

-during step e), the second varnish is also dried (1026), and

the steps of the method are carried out in the following order: a), f '' '), i' ''), b), c), k), e) and d).

8. The method of claim 1, wherein,

-the method comprises, before step b), a further step j) consisting in:

j) Temporarily fixing at least one removable tab (18) on a portion (Z62) of said surface (S62) to be coated with said screen (12),

-during step j), the tab is temporarily affixed to the portion (Z62) of the surface (S62) to be coated with the shutter (12), the tab being in the following configuration: a portion (182) of the tab protrudes therefrom and can be used without contacting the surface,

-during step b), the removable tab is at least partially covered by a band (122, 124, 126) of non-nebulized fluid, and

-during step d), the protruding portion (182) of the tab is pinched and pulled (A2) away from the surface.

9. The method of claim 1, wherein,

-the method comprises, before step b), a further step j) consisting in:

j) Temporarily fixing at least one removable suction cup (38) on a portion (Z62) of the surface (S62) to be coated with the screen (12),

-temporarily fixing the suction cup during step j) on the portion (Z62) of the surface (S62) to be coated with the mask (12) by pressing (A3),

-during step b), the removable suction cups are at least partially covered by a band (122, 124, 126) of non-nebulized fluid, and

-during step d), separating the suction cup from the surface by injecting a gas (A4) within the inner volume of the suction cup, and the removable suction cup (38) is pulled (A2) away from the surface (S62).

10. The method of claim 9, wherein,

-during step d), separating the suction cup from the surface by injecting a gas (A4) between the band (122, 124, 126) of non-atomized fluid and the surface (S62).

11. A method for patterning a surface of a component, the method comprising the following successive steps:

a) Coating a first coating article on at least a portion of the surface, wherein the first coating article is a first primer having a first color,

b) Coating a first varnish on the first primer,

c) Drying the first primer and the first varnish,

d) Automatically applying at least a portion of a mask over a portion of the surface, the at least a portion of the mask being applied over the first coating article, wherein the mask is applied at least partially in the form of at least one layer of a non-atomized fluid, the at least one layer being obtained by moving an applicator that ejects the non-atomized fluid along the portion of the surface over which the mask is to be applied,

d') after step d) and before step e), applying a second primer having a second color on the portion of the surface not covered by the covering,

e) Applying a second varnish on the second primer, the second varnish having an appearance once dried that is different from the appearance of the first varnish,

f) Drying the mask and the second varnish, and

g) The shutter is removed and the mask is removed,

wherein during step g) the suction cup is separated from the surface by injecting a gas between the at least one layer of non-atomized fluid and the surface.

12. The method of claim 11, wherein the method further comprises the steps of:

h') applying a clear coat over the second basecoat after step d), and

i) After step h '), drying the second basecoat and the clearcoat applied in step h'),

the steps of the method are carried out in the following order: a), b), c), d '), h'), i) and g).

13. The method of claim 11, wherein,

the method comprises before step b) a further step j) comprising:

temporarily fixing at least one removable tab to the portion of the surface to which the screen is to be applied,

during step j), the tab is temporarily affixed to the portion of the surface to which the screen is to be applied, the tab being in the following configuration: a portion of the tab protrudes from this portion and can be used without coming into contact with the surface,

during step d), the removable tab is at least partially covered by at least one layer of non-atomized fluid, and

during step g), the protruding portion of the tab is pinched and pulled away from the surface.

14. The method of claim 11, wherein,

the method comprises before step b) a further step j), said step j) comprising:

temporarily fixing at least one removable suction cup on the portion of the surface to which the screen is to be coated,

temporarily fixing the suction cup by pressing during step j) on the portion of the surface to be coated with the screen,

during step d), the suction cup is at least partially covered by at least one layer of a non-atomized fluid, and

-during step g), separating the suction cup from the surface by injecting a gas within the inner volume of the suction cup and the removable suction cup is pulled away from the surface.

15. The method of claim 11, wherein the second color is different from the first color.